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NAMExdr_simple, xdr_bool, xdr_char, xdr_double, xdr_enum, xdr_float, xdr_free, xdr_hyper, xdr_int, xdr_long, xdr_longlong_t, xdr_quadruple, xdr_short, xdr_u_char, xdr_u_hyper, xdr_u_int, xdr_u_long, xdr_u_longlong_t, xdr_u_short, xdr_void — library routines for external data representation SYNOPSIS#include <rpc/xdr.h> bool_t xdr_bool(XDR *xdrs,
bool_t *bp); bool_t xdr_char(XDR *xdrs,
char *cp); bool_t xdr_double(XDR *xdrs,
double *dp); bool_t xdr_enum(XDR *xdrs,
enum_t *ep); bool_t xdr_float(XDR *xdrs,
float *fp); void xdr_free(xdrproc_t proc,
char *objp); bool_t xdr_hyper(XDR *xdrs,
longlong_t *llp); bool_t xdr_int(XDR *xdrs,
int *ip); bool_t xdr_long(XDR *xdrs,
long *lp); bool_t xdr_longlong_t(XDR *xdrs,
longlong_t *llp); bool_t xdr_quadruple(XDR *xdrs,
long double *pq); bool_t xdr_short(XDR *xdrs,
short *sp); bool_t xdr_u_char(XDR *xdrs,
unsigned char *ucp); bool_t xdr_u_hyper(XDR *xdrs,
u_longlong_t *ullp); bool_t xdr_u_int(XDR *xdrs,
unsigned *up); bool_t xdr_u_long(XDR *xdrs,
unsigned long *ulp); bool_t xdr_u_longlong_t(XDR *xdrs,
u_longlong_t *ullp); bool_t xdr_u_short(XDR *xdrs,
unsigned short *usp); bool_t xdr_void(void); DESCRIPTIONXDR
library routines allow C programmers to describe
simple data structures in a machine-independent fashion.
Protocols such as remote procedure calls (RPC)
use these routines to describe the format of the data. These routines require the creation of
XDR
streams (see
xdr_create(3N)). RoutinesSee
rpc(3N)
for the definition of the
XDR
data structure.
Note that any buffers passed to the
XDR
routines must be properly aligned. It is suggested that
malloc(3C)
be used to allocate these buffers or that the programmer insure
that the buffer address is divisible evenly by four.
- bool_t xdr_bool()
xdr_bool()
translates between booleans (C integers)
and their external representations.
When encoding data, this filter produces values of either
1
or
0.
This routine returns
TRUE
if it succeeds,
FALSE
otherwise. - bool_t xdr_char()
xdr_char()
translates between C characters
and their external representations.
This routine returns
TRUE
if it succeeds,
FALSE
otherwise.
Note:
encoded characters are not packed, and occupy 4 bytes each.
For arrays of characters, it is worthwhile to consider
xdr_bytes(),
xdr_opaque(),
or
xdr_string()
(see
xdr_complex(3N)). - bool_t xdr_double()
xdr_double()
translates between C
double
precision numbers and their external representations.
This routine returns
TRUE
if it succeeds,
FALSE
otherwise. - bool_t xdr_enum()
xdr_enum()
translates between C
enum
(actually integers) and their external representations.
This routine returns
TRUE
if it succeeds,
FALSE
otherwise. - bool_t xdr_float()
xdr_float()
translates between C
floats
and their external representations.
This routine returns
TRUE
if it succeeds,
FALSE
otherwise. - void xdr_free()
Generic freeing routine.
The first argument is the
XDR
routine for the object being freed.
The second argument
is a pointer to the object itself.
Note:
the pointer passed to this routine is not
freed, but what it points to is freed (recursively,
depending on the XDR routine). - bool_t xdr_hyper()
xdr_hyper()
translates between ANSI C
long long
integers and their external representations.
This routine returns
TRUE
if it succeeds,
FALSE
otherwise. - bool_t xdr_int()
xdr_int()
translates between C integers
and their external representations.
This routine returns
TRUE
if it succeeds,
FALSE
otherwise. - bool_t xdr_long()
xdr_long()
translates between C
long
integers and their external representations.
This routine returns
TRUE
if it succeeds,
FALSE
otherwise. - bool_t xdr_longlong_t()
xdr_longlong_t()
translates between ANSI C
long long
integers and their external representations.
This routine returns
TRUE
if it succeeds,
FALSE
otherwise.
This routine is identical to
xdr_hyper(). - bool_t xdr_quadruple()
xdr_quadruple()
translates between IEEE
quadruple precision floating point numbers
and their external representations.
This routine returns
TRUE
if it succeeds,
FALSE
otherwise. - bool_t xdr_short()
xdr_short()
translates between C
short
integers and their external representations.
This routine returns
TRUE
if it succeeds,
FALSE
otherwise. - bool_t xdr_u_char()
xdr_u_char()
translates between
unsigned
C characters and their external representations.
This routine returns
TRUE
if it succeeds,
FALSE
otherwise. - bool_t xdr_u_hyper()
xdr_u_hyper()
translates between unsigned ANSI C
long long
integers and their external representations.
This routine returns
TRUE
if it succeeds,
FALSE
otherwise. - bool_t xdr_u_int()
A filter primitive that translates between a C
unsigned
integer and its external representation.
This routine returns
TRUE
if it succeeds,
FALSE
otherwise. - bool_t xdr_u_long()
xdr_u_long()
translates between C
unsigned long
integers and their external representations.
This routine returns
TRUE
if it succeeds,
FALSE
otherwise. - bool_t xdr_u_longlong_t()
xdr_u_longlong_t()
translates between unsigned ANSI C
long long
integers and their external representations.
This routine returns
TRUE
if it succeeds,
FALSE
otherwise.
This routine is identical to
xdr_u_hyper(). - bool_t xdr_u_short()
xdr_u_short()
translates between C
unsigned short
integers and their external representations.
This routine returns
TRUE
if it succeeds,
FALSE
otherwise. - bool_t xdr_void(void);
This routine always returns
TRUE.
It may be passed to
RPC
routines that require a function parameter,
where nothing is to be done.
MULTITHREAD USAGE- Thread Safe:
Yes - Cancel Safe:
Yes - Fork Safe:
No - Async-cancel Safe:
No - Async-signal Safe:
No
These functions can be called safely in a multithreaded environment. They
may be cancellation points in that they call functions that are cancel
points. In a multithreaded environment, these functions are
not safe to be called by a child process after
fork()
and before
exec().
These functions should not be called by a multithreaded application
that support asynchronous cancellation or asynchronous signals. |
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